Message format for the communication
Article 8
The nodes shall use for syntax common message formats based on standards that have already been deployed more than once between Member States and proven to work in an operational environment. The syntax shall allow: (a) proper processing of the minimum set of person identification data uniquely representing a natural or legal person; (b) proper processing of the assurance level of the electronic identification means; (c) distinction between public sector bodies and other relying parties; (d) flexibility to meet the needs of additional attributes relating to identification.